EP 2015228 B1 20111116 - Retrieving electronic documents by converting them to synthetic text
Title (en)
Retrieving electronic documents by converting them to synthetic text
Title (de)
Abruf elektronischer Dokumente durch ihre Umwandlung in synthetischen Text
Title (fr)
Récupération de documents électroniques en les convertissant en texte synthétique
Publication
Application
Priority
US 77714207 A 20070712
Abstract (en)
[origin: EP2015228A1] The present invention relies on the two-dimensional information in documents and encodes two-dimensional structures into a one-dimensional synthetic language such that two-dimensional documents can be searched at text search speed. The system comprises: an indexing module, a retrieval module, an encoder, a quantization module, a retrieval engine and a control module coupled by a bus. A number of electronic documents are first indexed by the indexing module and stored as a synthetic text library. The retrieval module then converts and input image to synthetic text and searches for matches to the synthetic text in the synthetic text library. The matches can be in turn used to retrieve the corresponding electronic documents. It should be noted that a plurality of matches and corresponding electronic documents may be retrieves ranked by order according the similarity of the synthetic text. In one or more embodiments, the present invention includes a method for indexing documents by converting them to synthetic text, and a method for retrieving documents by converting an image to synthetic text and comparing the synthetic text to documents that have been converted to synthetic text for a match.
IPC 8 full level
G06K 9/46 (2006.01); G06V 30/10 (2022.01)
CPC (source: EP US)
G06F 40/284 (2020.01 - US); G06V 30/18171 (2022.01 - EP US); G06V 30/414 (2022.01 - EP US); G06V 30/418 (2022.01 - EP US); G06V 30/10 (2022.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 2015228 A1 20090114; EP 2015228 B1 20111116; JP 2009020887 A 20090129; JP 5176730 B2 20130403; US 2009018990 A1 20090115; US 2012173504 A1 20120705; US 2014012857 A1 20140109; US 8176054 B2 20120508; US 8478761 B2 20130702; US 9092423 B2 20150728
DOCDB simple family (application)
EP 08159971 A 20080709; JP 2008180789 A 20080710; US 201213415228 A 20120308; US 201313933078 A 20130701; US 77714207 A 20070712